Please check the carton and product since you got it , if something damaged during transport by express company ,let us know immediately, then take a pic for the package and product first , and test the product normal or not ,any problem pls contact us asap so that you can cover the corresponding warranty

Return /Replacement

Within 14 days(based on the delivery data) :

Repair fee all free.Buyer return the insdie board with the cheapest postage,we'll cover for the return postage and resend a whole replacement by our charger.Or we can send parts for repair

After 14 days to 1 year(based on the purchase data)

Free repaire,buyer pay for return postage and resend postage.Or we can send parts for repair , buyer responsible for the postage

After 1 year(based on the purchase data)

Repaire charger, buyer pay for return postage and resend postage

Refund :

Within 45 days(based on the delivery data)

Product fault :Full refund ,buyer responsible for return the inverter back for full refund 

Product good :Refund product cost , buyer responsible for return the item back and freight for original sent out

After 45 days -2 months

Product fault:refund product cost , buyer responsible for return the inverter back and paypal cost 10%

Product good: refund product cost, buyer responsible for return the inverter back and paypal cost 10% and freight for original sent out

After 2 months : No refund